The Arizona black rattlesnake is a high-elevation medium-sized (<1,000 mm) rattlesnake found primarily in Arizona and extreme western New Mexico. Adults are dark brown or black in background color, with white- or yellow-edged barker hexagonal blotches. Juveniles are born with a grey background and dark blotches. Arizona black rattlesnakes are typically found in pine-oak

Following a competitive nation-wide search, Dr. Barry D. Gold has been named to head the Grand Canyon Monitoring and Research Center of the U.S. Department of the Interior, by Dr. Charles R. Groat, director of the U.S. Geological Survey.

Weather forecasts and the Southwestern environment will be highlighted Wednesday afternoon, November 10, as The U.S. Geological Survey and the National Weather Service (NWS) host an open house at their facilities in the Dennis DeConcini Environment and Natural Resources Building on the University of Arizona campus.

Following the official dedication Friday morning, March 21, 1997, of the University of Arizona’s new Environment and Natural Resources Building, the public is invited to tour the facility on the campus at the northeast corner of Sixth Street and Park Avenue.

You no doubt are already aware of the March 21, 1997 dedication ceremony for the University of Arizona’s new Environmental and Natural Resources building at 520 North Park Avenue in Tucson. The building will be occupied by the U.S. Geological Survey, the U.S. Weather Service, and U of A students.

The presence of the U.S. Geological Survey in the University of Arizona’s Environment and Natural Resources Building marks the latest chapter in the USGS’s long association with the University and the study of earth sciences in Arizona.

The gasoline additive MTBE (methyl tert-butyl ether) was detected in some urban stormwater samples collected in 16 cities and metropolitan areas by the U.S. Geological Survey, but all detections of MTBE were less than the lower limit of the U.S. Environmental Protection Agency’s draft lifetime health advisory for drinking water.

About 2200 pounds of nontoxic red dye will be dumped into the Colorado River Wednesday (Mar. 27, 1996) as part of a controlled flood experiment in the Colorado River in the Grand Canyon, according to hydrologists at the U.S. Geological Survey.

Call the U.S. Geological Survey scientists listed below for information about the water science aspects of the controlled flood experiment in the Colorado River, Mar. 22-April 7, 1996. Mark Anderson is the key information scientist for the USGS on-site, and other scientists are working on-site and are available on a limited basis. Still others will be in the USGS office in Tucson throughout the ex

It’s spring and some people are busy cleaning house and rearranging the furniture.

Spring cleaning and rearranging of a different kind will take place in the Grand Canyon next week, as the Colorado River scours its bed and rearranges sandbars that have built up in the river’s winding channel.